In descriptions about tastes of teas, more specifically Wuyi teas, but sometimes also other oolongs one frequently hears mentioned a mineral taste.

Keeps me wondering how would I know what a mineral taste is?
How do people know?

To put it in a silly way: is it what you get when you lick a stone?
Or when tasting mineral water? Or which other food or drink would have a typical taste which would be described as mineral? Some other drinking waters have added minerals, mostly very unpleasant to drink, so I am guessing it is not that.

Puzzles me…

Taste and smell are highly subjective in general, but there must be some common ground.